Just wondering

im not sure of the exact name, but i know that some of the market lamb people around where i live, give their market lambs liquid stuff in a bottle. any ideas what it is, and if it acutally makes the muscles better or w.e it is to do? we have a pretty good lamb this year and i was wondering if i should look into it or not. thanks ! p.s. any idea on anything to build muscle with sheep. thanks again

?? Dont know on first answer, protein builds muscle